%0 Journal Article %A V. A. Zhelnorovich %T On some new relations in the theory of piezoelectric media %J Doklady Akademii Nauk %D 1988 %P 840-844 %V 300 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_300_4_a17/ %G ru %F DAN_1988_300_4_a17